Two Cats Fell Down the Dragon Wall (High School DxD x OC)

Ever since he was socked in the guts by a certain white-haired Nekoshou as a child, Ed Sakari has made a promise to become the strongest (OF THEM ALL!) in order to one day surpass his so-called rival. However, one tiny little thing stands in the way; he's a plain old human. In other words, a race mostly ignored by ev...